@article{JETPL.100.218, title = {}, author = {, and Maslova, N. S.}, journal = {JETP Lett.}, volume = {100}, issue = {3}, pages = {197}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14150119}, note = {[Pisma v ZhETF 100, 218 (2014)]} }